A kind of automatic adjustment and positioning milling machine workpiece fixture

Abstract

The present invention discloses an automatic adjustment and positioning milling machine workpiece fixture, which aims to solve the problems of large workpiece fixtures in terms of fixation, adaptability and operational complexity. It includes a mounting base, on which vertically distributed transverse positioning seats and longitudinal positioning seats are installed. It also includes an auxiliary positioning seat slidably installed on the transverse positioning seat. A transverse control component and a longitudinal control component are also provided, which are respectively used to adjust the spacing between the two groups of transverse and longitudinal positioning seats and maintain linkage with them. In addition, the auxiliary control component is assembled on the transverse positioning seat and linked with the corresponding auxiliary positioning seat. The fixture assembly includes an assembly groove, an assembly slide, a positioning card seat, a retractable assembly and a lifting assembly. A plurality of groups of assembly grooves are fixedly installed on the inner side of each positioning seat, and an assembly slide is slidably installed in the groove. The positioning card seat is located above the assembly slide and is linked with the lifting assembly. The lifting assembly is matched with the retractable assembly.

Description

Technical Field

[0001] The invention relates to the technical field related to milling machines, in particular to an automatic adjustment and positioning milling machine workpiece fixture. Background Art

[0002] In modern manufacturing, especially in the processing of large workpieces, the design and application of fixtures face many challenges. Traditional fixtures are usually designed for small and medium-sized workpieces. Although they can effectively meet general application needs, the difficulty of fixing and adjusting large workpieces ranging from several meters to tens of meters is significantly increased. Existing fixture technology has obvious shortcomings in the following aspects:

[0003] 1. Low fixing efficiency: For large workpieces, traditional fixtures are difficult to provide sufficient fixing force and stability. The large size and diverse shapes of the workpieces make it difficult for the fixture to apply uniform and stable force during the fixing process, thus affecting the clamping effect of the workpiece. In this case, the workpiece may move during the processing, seriously affecting the processing accuracy and quality.

[0004] 2. Poor adaptability: Traditional fixtures are generally designed for the shape and size of specific workpieces and lack sufficient flexibility to adapt to workpieces of different shapes or sizes. In actual production, it is often necessary to redesign or adjust the fixture according to the characteristics of different workpieces, which not only increases the design and manufacturing costs, but also prolongs the production cycle.

[0005] 3. Complex adjustment: Currently, large workpiece fixtures are mostly designed with multiple units, each of which usually needs to be adjusted and controlled separately. This design method leads to high control complexity and cumbersome operation in practical applications. For application scenarios that require high-precision positioning, this complex adjustment mechanism not only increases the difficulty of operation, but also reduces the efficiency and stability of the overall system.

[0006] 4. Comprehensive adjustment problem: When performing comprehensive adjustment on multiple fixtures, since each fixture operates independently, a complex coordination control mechanism is often required to ensure the coordination and synchronization between the fixtures. In the existing technology, it is difficult to achieve accurate and synchronous adjustment of multiple fixtures, resulting in problems such as difficulty in adjustment and inconvenience in operation in actual applications.

[0007] Therefore, the design of fixtures for large workpieces urgently requires a solution with high fixing efficiency, good adaptability, and simple adjustment mechanism to improve the versatility and ease of operation of the fixture, thereby meeting the needs of modern manufacturing for large-size workpiece processing. Summary of the invention

[0008] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an automatically adjusted and positioned milling machine workpiece fixture, which solves the problems of large workpiece fixtures in fixation, adaptability, operational complexity, etc., and provides a more efficient, stable and flexible fixture solution for modern manufacturing industry.

[0009] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: an automatically adjusting and positioning milling machine workpiece fixture, including a mounting base and two groups of transverse positioning seats and longitudinal positioning seats assembled on the mounting base and maintained in vertical distribution, the running directions of the transverse positioning seats and longitudinal positioning seats remain vertical, and also include an auxiliary positioning seat slidably installed on the transverse positioning seat, and the running directions of the auxiliary positioning seat and the transverse positioning seat remain parallel.

[0010] It also includes: a lateral control component that is linked with the lateral positioning seat and adjusts the distance between the two groups of lateral positioning seats, a longitudinal control component that is linked with the longitudinal positioning seat and adjusts the distance between the two groups of longitudinal positioning seats, and an auxiliary control component that is assembled on the lateral positioning seat and is linked with the corresponding auxiliary positioning seat.

[0011] It also includes a fixture assembly, which includes an assembly groove, an assembly slide, a positioning seat, a retractable assembly, and a lifting assembly. The inner sides of the transverse positioning seat, the longitudinal positioning seat, and the auxiliary positioning seat are fixedly installed with multiple groups of assembly grooves, and several groups of assembly slides are slidably installed in the assembly grooves. The positioning seat is arranged above the assembly slide and maintains linkage with the lifting assembly. The lifting assembly is matched with the retractable assembly.

[0012] In order to ensure that the lateral positioning seat and the longitudinal positioning seat can be stably assembled on the mounting base in a relatively movable manner, and to effectively avoid spatial and motion interference between the lateral positioning seat and the longitudinal positioning seat during operation, the following technical solutions are provided:

[0013] The mounting base is fixedly connected with a plurality of travel guide rails which are arranged in parallel and distributed on both sides of the mounting base. Travel wheels which are matched with the travel guide rails are mounted on both sides of the bottom of the transverse positioning seat, and brake wheel brakes are mounted on the travel wheels.

[0014] A clearance gap is formed at the bottom of the transverse positioning seat, and the two groups of longitudinal positioning seats are arranged in the clearance gap.

[0015] The mounting base is fixedly connected with two sets of travel guide grooves which are arranged in parallel and distributed at both ends of the travel guide rail. The travel guide grooves are vertically distributed with the travel guide rails. The bottoms of both ends of the longitudinal positioning seat are fixedly connected with guide seats which are slidably installed in the travel guide grooves.

[0016] In order to ensure that the auxiliary positioning seat can be stably installed in the lateral positioning seat in a relatively sliding posture, and to ensure that the auxiliary positioning seat can effectively position a cylindrical workpiece or a workpiece with a curved edge, the following technical solutions are provided:

[0017] The transverse positioning seat is provided with a sliding through slot, and the auxiliary positioning seat is slidably installed in the sliding through slot.

[0018] The inner side surface of the auxiliary positioning seat is provided with two sections of positioning bevels, and the angles between the positioning bevels and the transverse positioning seat and the longitudinal positioning seat are all set to 45 degrees. The positioning bevels are equipped with assembly grooves of the clamp assembly.

[0019] In order to ensure that the lateral control assembly can drive the two groups of lateral positioning seats to maintain constant speed and symmetrical movement, so as to realize the movement of the two groups of lateral positioning seats towards or away from each other, the following technical solutions are provided:

[0020] The lateral control component includes two groups of linkage components respectively arranged on both sides of the lateral positioning seat, and the linkage component includes a fixed pulley A, a fixed pulley B, a steel cable A, and a steel cable B. The fixed pulley A and the fixed pulley B are respectively rotatably installed at both ends of the mounting base and arranged in the same length direction of the mounting base. The two ends of the steel cable A are respectively fixedly connected to the two groups of lateral positioning seats and arranged by bypassing the fixed pulley A. The two ends of the steel cable B are respectively fixedly connected to the two groups of lateral positioning seats and arranged by bypassing the fixed pulley B.

[0021] In order to ensure that the lateral control assembly can drive the lateral positioning seat to run stably along the travel guide rail, the following technical solutions are provided:

[0022] The lateral control component also includes two groups of drive components respectively arranged on both sides of one group of lateral positioning seats, the drive components include a winding drum, a drive motor A, a guide wheel, a steel cable C, and a fixed pulley C. The winding drum is rotatably installed on the outer side of the lateral positioning seat, the drive motor A maintains a power connection with the winding drum, guide wheels are arranged on both sides of the winding drum, the fixed pulley C is rotatably installed on the mounting base and arranged on both sides of the winding drum, the steel cable C is wound on the winding drum, and both ends of the steel cable C are fixedly connected to the lateral positioning seat after passing around the guide wheel and fixed pulley on the corresponding side.

[0023] In order to ensure that the longitudinal control assembly can drive the two sets of longitudinal positioning seats to slide stably along the travel guide groove and ensure that the two sets of adjustment assemblies can achieve constant speed and symmetrical movement, the following technical solutions are provided:

[0024] The two groups of the travel guide grooves are equipped with the longitudinal control assembly, which includes a drive motor B and a threaded rod A. The threaded rod A is rotatably installed in the travel guide groove. The threaded rod A is provided with two sections of thread grooves arranged in opposite spiral directions. The guide seats of the two groups of the longitudinal positioning seats are respectively screwed to the two sections of the thread grooves. The drive motor B is fixedly installed in the mounting base and maintains a power connection with the threaded rod A.

[0025] In order to ensure that the auxiliary control assembly can drive the corresponding auxiliary positioning seat to stably slide in the sliding groove in the corresponding lateral positioning seat and realize the position adjustment of the auxiliary positioning seat, the following technical solutions are provided:

[0026] The auxiliary control assembly includes a drive motor C and a threaded rod B. The threaded rod B is rotatably installed in the sliding groove and is rotationally connected to the auxiliary positioning seat. The drive motor C is fixedly installed at one end of the sliding groove and is dynamically connected to the threaded rod B.

[0027] In order to ensure that the assembly slide can slide stably in the assembly groove and that each group of assembly slides can operate independently, the following technical solutions are provided:

[0028] The assembly groove is fixedly connected with a guide rod and a threaded rod C arranged along its length direction, the assembly slide is slidably connected with the guide rod, an assembly cavity is opened in the assembly slide, the threaded rod C is arranged through the assembly cavity, the clamp assembly also includes an adjustment assembly assembled in the assembly cavity, the adjustment assembly includes a threaded sleeve, a drive motor D and a matching combination of a worm wheel and a worm, the threaded sleeve is rotatably installed in the assembly cavity and is kept in rotational connection with the threaded rod C, the drive motor D is fixedly installed in the assembly cavity and the worm is fixedly connected to the output shaft of the drive motor D, and the worm wheel is fixedly connected to the periphery of the threaded sleeve.

[0029] In order to ensure that each group of retractable components in the same assembly slot can synchronously control the retractable adjustment of the positioning card seat, the following technical solutions are provided:

[0030] A spline shaft A arranged along the length direction of the assembly groove is rotatably installed in the assembly groove, an assembly box is fixedly connected to one end of the assembly groove, a drive motor E is fixedly installed in the assembly box, the drive motor E spline shaft A maintains power connection, and a sliding guide groove is opened in the assembly slide.

[0031] The retractable assembly includes a driving bevel gear A, a transmission bevel gear A, a threaded rod D, and a sliding bracket. The driving bevel gear A and the transmission bevel gear A are both rotatably installed in the assembly cavity and remain in meshing. The driving bevel gear A and the spline shaft A are slidably plugged in. The threaded rod D is rotatably installed in the sliding guide groove and fixedly connected to the transmission bevel gear A. The sliding bracket is slidably installed in the sliding guide groove and remains rotationally connected to the threaded rod D.

[0032] In order to ensure that each group of lifting components in the same assembly slot can synchronously control the lifting and lowering adjustment of each positioning card seat, the following technical solutions are provided:

[0033] A spline shaft B arranged along the length direction of the assembly groove is rotatably installed in the assembly groove, and a driving motor F that maintains power connection with the spline shaft B is fixedly installed in the assembly box.

[0034] The lifting assembly includes a driving bevel gear B, a transmission bevel gear B, a spline shaft C, a driving bevel gear C, a transmission bevel gear C, and a threaded rod E. The driving bevel gear B and the transmission bevel gear B are both rotatably installed in the assembly cavity and remain in meshing. The driving bevel gear B and the spline shaft B are slidably plugged in. The spline shaft B is rotatably installed in the sliding guide groove and is fixedly connected to the transmission bevel gear B. The driving bevel gear C and the transmission bevel gear C are both rotatably installed on the sliding bracket and remain in meshing. The driving bevel gear C and the spline shaft B are slidably plugged in. The threaded rod E is rotatably installed in the sliding bracket and arranged in a vertical direction. The transmission bevel gear C is fixedly connected to the threaded rod E. The positioning card seat is slidably installed on the sliding bracket and remains rotationally connected to the threaded rod E.

[0035] Beneficial effects of the present invention:

[0036] 1. Improve the fixing stability: Through the matching combination of the horizontal positioning seat, the longitudinal positioning seat, and the auxiliary positioning seat, and the corresponding control components are used to adjust the position and posture, and the fixture components installed on each positioning seat are used to stably fix the large workpiece inside in all directions, thereby significantly improving the fixing stability of the workpiece and preventing deviation during the processing process.

[0037] 2. Enhanced adaptability: The coordinated operation of the horizontal positioning seat, the longitudinal positioning seat and their supporting control components can effectively fix large workpieces with rectangular contours. After the auxiliary positioning seat and the corresponding auxiliary adjustment components are added, cylindrical and curved workpieces can be effectively fixed. At the same time, the assembly slide in each fixture component can be adjusted in position through the adjustment component, and the positioning seat can be adjusted in retraction, extension, lifting and lowering posture to effectively fix various types of workpieces. This design greatly enhances the versatility of the fixture and reduces the need to redesign the fixture for different workpieces.

[0038] 3. Simplify the operation process: The design of the fixture assembly makes the adjustment and control of multiple assembly slides more centralized and simple. Through the coordinated operation of the retractable assembly and the lifting assembly, the retractable and lifting postures of each positioning card seat in the same assembly slot can be uniformly adjusted. The position and posture of each assembly slide can be independently adjusted through the adjustment assembly, which reduces complex adjustment operations and improves the overall efficiency of the system.

[0039] 4. Synchronous control function: The use of various types of spline shafts and matching bevel gear mechanisms can achieve synchronous control of multiple positioning chucks to ensure coordination and consistency among various fixtures. This mechanism not only simplifies the operation process, but also improves the stability and reliability of the fixture system in practical applications.

[0040] In general, this solution solves the problems of large workpiece fixtures in terms of fixation, adaptability, and operational complexity by improving the fixture design and adjustment mechanism, providing a more efficient, stable, and flexible fixture solution for modern manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure of the installation base;

[0043] Figure 3 for Figure 2 A schematic diagram of the enlarged details of part A;

[0044] Figure 4 It is a structural schematic diagram of the combination of the longitudinal positioning seat and the longitudinal control component;

[0045] Figure 5 for Figure 4 A schematic diagram of the enlarged detail of part B;

[0046] Figure 6 It is a structural diagram of the combination of a lateral positioning seat, an auxiliary positioning seat, a lateral control component, and an auxiliary control component;

[0047] Figure 7 It is a structural diagram of the linkage component;

[0048] Figure 8 is a schematic diagram of the structure of the drive component;

[0049] Fig. 9 It is a structural diagram of the matching combination of the lateral positioning seat and the auxiliary positioning seat;

[0050] Fig.10 It is a schematic diagram of the structure of the lateral positioning seat and the components installed thereon;

[0051] Fig.11 It is a schematic diagram of the structure of the auxiliary positioning seat and the components installed thereon;

[0052] Fig.12 is a schematic diagram of the structure of the fixture assembly;

[0053] Fig.13 is a detailed schematic diagram of the fixture assembly;

[0054] Fig.14 A detailed schematic diagram of the assembly slide and the components mounted thereon;

[0055] Fig.15 It is a structural diagram of the matching combination of the retractable component and the lifting component.

[0056] In the figure: 1 mounting base, 11 travel guide rail, 12 travel guide groove, 13 bearing bracket, 14 assembly bracket A, 15 assembly bracket B, 16 assembly sink, 2 transverse positioning seat, 21 travel wheel, 22 clearance gap, 23 sliding groove, 24 connecting ear seat, 25 mounting pad seat, 3 longitudinal positioning seat, 31 guide seat, 4 auxiliary positioning seat, 41 positioning bevel, 51 linkage assembly, 511 fixed pulley A, 512 fixed pulley B, 513 steel cable A, 514 steel cable B, 52 driving assembly, 521 winding drum, 522 driving motor A, 523 guide wheel, 524 steel cable C, 525 fixed pulley C, 6 longitudinal control assembly, 61 driving motor B, 62 threaded rod A, 7 auxiliary control assembly , 71 driving motor C, 72 threaded rod B, 8 fixture assembly, 81 assembly groove, 811 guide rod, 812 threaded rod C, 813 spline shaft A, 814 assembly box, 815 driving motor E, 816 spline shaft B, 817 driving motor F, 82 assembly slide, 821 assembly cavity, 822 sliding guide groove, 83 positioning card seat, 841 driving bevel gear A, 842 transmission bevel gear A, 843 threaded rod D, 844 sliding bracket, 851 driving bevel gear B, 852 transmission bevel gear B, 853 spline shaft C, 854 driving bevel gear C, 855 transmission bevel gear C, 856 threaded rod E, 861 threaded sleeve, 862 driving motor D, 863 worm wheel, 864 worm. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Example 1

[0059] See also Figure 1-Figure 15 An automatic adjustment and positioning milling machine workpiece fixture includes a mounting base 1 and two groups of transverse positioning seats 2 and longitudinal positioning seats 3 assembled on the mounting base 1 and maintained in vertical distribution. The running directions of the transverse positioning seats 2 and the longitudinal positioning seats 3 remain vertical. It also includes an auxiliary positioning seat 4 slidably mounted on the transverse positioning seat 2, and the running direction of the auxiliary positioning seat 4 and the transverse positioning seat 2 remain parallel.

[0060] It also includes: a transverse control component that is linked with the transverse positioning seat 2 and adjusts the distance between the two groups of transverse positioning seats 2, a longitudinal control component 6 that is linked with the longitudinal positioning seat 3 and adjusts the distance between the two groups of longitudinal positioning seats 3, and an auxiliary control component 7 that is assembled on the transverse positioning seat 2 and is linked with the corresponding auxiliary positioning seat 4.

[0061] It also includes a fixture assembly 8, which includes an assembly groove 81, an assembly slide 82, a positioning seat 83, a retractable assembly, and a lifting assembly. The inner sides of the transverse positioning seat 2, the longitudinal positioning seat 3, and the auxiliary positioning seat 4 are fixedly installed with multiple groups of assembly grooves 81, and several groups of assembly slides 82 are slidably installed in the assembly grooves 81. The positioning seat 83 is arranged above the assembly slide 82 and keeps linkage with the lifting assembly. The lifting assembly is matched with the retractable assembly.

[0062] The workpiece fixture is mainly used for positioning large-sized workpieces. The large-sized workpieces positioned in the workpiece fixture are processed by a gantry milling machine, which can meet the clamping and fixing requirements of workpieces with a size of several meters to tens of meters. The function of the mounting base 1 is to effectively carry the workpiece processed by the milling machine, and to ensure that the lateral positioning seat 2 and the longitudinal positioning seat 3 are stably installed thereon in a relatively movable manner, as well as the installation of the lateral control component and the longitudinal control component 6.

[0063] The transverse positioning seat 2 is arranged along the width direction of the mounting base 1 and runs along the length direction, while the longitudinal positioning seat 3 is arranged along the length direction of the mounting base 1 and runs along the width direction. The transverse control component can drive the two groups of transverse positioning seats 2 to maintain symmetrical movement so that the two groups of transverse positioning seats 2 move closer to or away from each other, and the longitudinal control component 6 can drive the two groups of longitudinal positioning seats 3 to maintain symmetrical movement so that the two groups of longitudinal positioning seats 3 move closer to or away from each other.

[0064] Through the coordinated operation of the transverse positioning seat 2 and the longitudinal positioning seat 3, most of the fixtures hoisted onto the mounting base 1 and having a rectangular outline boundary can be effectively fixed to ensure that the gantry milling machine operating above the mounting base 1 can effectively process the workpiece.

[0065] When positioning a workpiece with a curved or cylindrical boundary, the auxiliary positioning seat 4 also participates in the positioning, and the auxiliary control component 7 drives the auxiliary positioning seat 4 to adjust and move on the corresponding lateral positioning seat 2, and the lateral positioning seat 2, the longitudinal positioning seat 3, and the auxiliary positioning seat 4 effectively clamp and fix the corresponding workpiece.

[0066] When clamping and positioning the workpiece, the specific positioning of the workpiece is mainly completed by the fixture assembly 8 assembled on the transverse positioning seat 2, the longitudinal positioning seat 3, and the auxiliary positioning seat 4. Specifically, the assembly slide 82 can slide in the corresponding assembly groove 81 to adjust its specific position and the distance between the adjacent assembly slide 82, thereby ensuring that the positioning card seat 83 assembled thereon can be evenly arranged relative to the workpiece, and the positioning card seat 83 applies a uniform force to the workpiece to ensure the stable fixation of the workpiece.

[0067] When the positioning seat 83 is driven by the lifting assembly to operate, the positioning seat 83 moves up and down in the vertical direction to effectively fix workpieces of different thicknesses. When the retracting assembly is in operation, it can drive the lifting assembly and the positioning seat 83 to operate synchronously in the horizontal direction, so that the positioning seat 83 extends out of the inner side of the transverse positioning seat 2, the longitudinal positioning seat 3, and the auxiliary positioning seat 4, thereby effectively fixing the workpiece inside.

[0068] Example 2

[0069] See also Figure 1-Figure 11 In order to ensure that the lateral positioning seat 2 and the longitudinal positioning seat 3 can be stably assembled on the mounting base 1 in a relatively movable manner, and effectively avoid spatial and motion interference between the lateral positioning seat 2 and the longitudinal positioning seat 3 during operation, the following technical solutions are provided:

[0070] The mounting base 1 is fixed with a plurality of travel guide rails 11 arranged in parallel and distributed on both sides of the mounting base 1 , and the bottom sides of the transverse positioning seat 2 are equipped with travel wheels 21 matched with the travel guide rails 11 , and the travel wheels 21 are equipped with brake wheel brakes.

[0071] A clearance notch 22 is formed at the bottom of the transverse positioning seat 2 , and the two groups of longitudinal positioning seats 3 are arranged in the clearance notch 22 .

[0072] The mounting base 1 is fixed with two sets of travel guide grooves 12 which are arranged in parallel and distributed at both ends of the travel guide rail 11. The travel guide grooves 12 are vertically distributed with the travel guide rail 11. The bottoms of both ends of the longitudinal positioning seat 3 are fixed with guide seats 31 which are slidably installed in the travel guide grooves 12.

[0073] The traveling guide rail 11 and the traveling guide groove 12 are respectively arranged along the length direction and the width direction of the mounting base 1. The cooperation between the traveling guide rail 11 and the traveling wheel 21 can ensure that the transverse positioning seat 2 can run stably along the length direction of the mounting base 1. After the position and posture adjustment of the transverse positioning seat 2 is completed, the braking wheel gate can be controlled to act on the traveling wheel 21 to lock and fix the traveling wheel 21, thereby ensuring that the transverse positioning seat 2 is fixedly parked at the characteristic position of the traveling guide rail 11. After positioning the workpiece, it can resist the lateral movement trend caused by the spindle cutter head of the milling machine on the workpiece.

[0074] A clearance notch 22 is provided at the bottom of the transverse positioning seat 2 to ensure that the two longitudinal positioning seats 3 can stably operate therein along the width direction of the mounting base 1, so as to ensure that the transverse movement of the transverse positioning seat 2 and the longitudinal movement of the longitudinal positioning seat 3 will not interfere with each other.

[0075] The travel guide groove 12 is slidably matched with the guide seat 31 on the longitudinal positioning seat 3 , which can ensure that the longitudinal positioning seat 3 runs stably along the width direction of the mounting base 1 .

[0076] A bearing bracket 13 is provided on the inner side of the mounting base 1. The bearing bracket 13 is flush with the upper surface of the mounting base 1 and has a hollow design. When the spindle cutter head of the milling machine acts on the workpiece, the scraps and debris cut out can flow down through the bearing bracket 13, which is convenient for cleaning and collecting the waste and prevents the waste from accumulating on the mounting base 1 and affecting the stable operation of various components.

[0077] In order to ensure that the auxiliary positioning seat 4 can be stably installed in the lateral positioning seat 2 in a relatively sliding posture, and to ensure that the auxiliary positioning seat 4 can effectively position a cylindrical workpiece or a workpiece with a curved edge, the following technical solutions are provided:

[0078] The transverse positioning seat 2 is provided with a sliding through slot 23 , and the auxiliary positioning seat 4 is slidably installed in the sliding through slot 23 .

[0079] The inner side of the auxiliary positioning seat 4 is provided with two positioning bevels 41 , the included angles between the positioning bevels 41 and the transverse positioning seat 2 and the longitudinal positioning seat 3 are all set to 45°, and the positioning bevels 41 are equipped with assembly grooves 81 of the clamp assembly 8 .

[0080] The sliding groove 23 is arranged above the clearance notch 22, which can ensure that the auxiliary positioning seat 4 can slide stably therein. The positioning bevel 41 inside the auxiliary positioning seat 4 can be tangent to the outer edge of the workpiece with a curved surface or a cylindrical workpiece, and the outer edge of such a workpiece can be effectively clamped and positioned by the clamp assembly 8 assembled here.

[0081] Example 3

[0082] See also Figure 1 , Figure 4-Figure 10In order to ensure that the lateral control assembly can drive the two groups of lateral positioning seats 2 to maintain constant speed and symmetrical movement, so as to realize the movement of the two groups of lateral positioning seats 2 towards or away from each other, the following technical solutions are provided:

[0083] The lateral control component includes two groups of linkage components 51 respectively arranged on both sides of the lateral positioning seat 2, and the linkage component 51 includes a fixed pulley A511, a fixed pulley B512, a steel cable A513, and a steel cable B514. The fixed pulley A511 and the fixed pulley B512 are respectively rotatably installed at both ends of the mounting base 1 and are arranged in the same length direction of the mounting base 1. The two ends of the steel cable A513 are respectively fixedly connected to the two groups of lateral positioning seats 2 and are arranged around the fixed pulley A511. The two ends of the steel cable B514 are respectively fixedly connected to the two groups of lateral positioning seats 2 and are arranged around the fixed pulley B512.

[0084] An assembly bracket A14 is fixedly connected to the corner position of the mounting base 1, and the fixed pulley A511 and the fixed pulley B512 are installed on the corresponding assembly bracket A14 in a relatively rotatable manner. Connecting ear seats 24 are fixedly connected to both sides of the transverse positioning seat 2, and the ends of the steel cables A513 and B514 are fixedly connected to the corresponding connecting ear seats 24. After the steel cables A513 and B514 pass around the corresponding fixed pulleys A511 and B512, they pass through the corresponding connecting ear seats 24 and are fixedly connected to the connecting ear seats 24 on another transverse positioning seat 2 in a manner without causing spatial interference.

[0085] Fixed pulley A511 and fixed pulley B512 can change the transmission direction of the tension on the steel cable A513 and steel cable B514. When one group of transverse positioning seats 2 runs along the travel guide rail 11 on the mounting base 1, the other group of transverse positioning seats 2 will be pulled by the steel cable A513 or steel cable B514 to move synchronously in the opposite direction, thereby achieving the two groups of transverse positioning seats 2 to move closer to or away from each other.

[0086] In order to ensure that the lateral control assembly can drive the lateral positioning seat 2 to run stably along the travel guide rail 11, the following technical solutions are provided:

[0087] The lateral control component also includes two groups of drive components 52 respectively arranged on both sides of one group of lateral positioning seats 2. The drive component 52 includes a winding drum 521, a drive motor A522, a guide wheel 523, a steel cable C524, and a fixed pulley C525. The winding drum 521 is rotatably installed on the outer side of the lateral positioning seat 2. The drive motor A522 maintains a power connection with the winding drum 521. Guide wheels 523 are arranged on both sides of the winding drum 521. The fixed pulley C525 is rotatably installed on the mounting base 1 and arranged on both sides of the winding drum 521. The steel cable C524 is wound on the winding drum 521. Both ends of the steel cable C524 are fixedly connected to the lateral positioning seat 2 after passing through the guide wheel 523 and the fixed pulley on the corresponding side.

[0088] The driving assembly 52 is only assembled on one group of the transverse positioning seats 2 to drive the transverse positioning seats 2 to move forward, while the other group of the transverse positioning seats 2 is linked by the linkage assembly 51 .

[0089] Each set of driving components 52 is equipped with two sets of fixed pulleys C525, one set of fixed pulleys C525 is assembled to the assembly bracket A14 on the corresponding side, and an assembly bracket B15 is fixedly connected to the middle section of both sides of the mounting base 1, and the other set of fixed pulleys C525 is rotatably mounted on the assembly bracket B15.

[0090] Mounting pads 25 are also fixedly connected to both sides of the lateral positioning seat 2, and the winding drum 521 and the guide wheel 523 are rotatably mounted on the mounting pads 25. The driving motor A522 is fixedly mounted thereon and the output shaft is fixedly connected to the axis of the winding drum 521. The guide wheel 523 can guide and arrange the steel cable C524 released from both sides of the winding drum 521 to ensure that the steel cable C524 can be stably combined with the fixed pulley C525.

[0091] When the drive motor A522 drives the winding drum 521 to operate, one end of the steel cable C524 is wound onto the winding drum 521, while the other end is released from the winding drum 521, thereby pulling the corresponding transverse positioning seat 2 along the travel guide rail 11 with the help of the combination of the fixed pulley and the steel cable C524 to run stably.

[0092] In order to ensure that the longitudinal control assembly 6 can drive the two groups of longitudinal positioning seats 3 to slide stably along the travel guide groove 12, and ensure that the two groups of adjustment assemblies can achieve constant speed and symmetrical movement, the following technical solutions are provided:

[0093] Both sets of travel guide grooves 12 are equipped with longitudinal control components 6, which include a drive motor B61 and a threaded rod A62. The threaded rod A62 is rotatably installed in the travel guide groove 12. The threaded rod A62 is provided with two sections of threaded grooves arranged in opposite spiral directions. The guide seats 31 of the two sets of longitudinal positioning seats 3 are respectively screwed to the two sections of threaded grooves. The drive motor B61 is fixedly installed in the mounting base 1 and maintains a power connection with the threaded rod A62.

[0094] An assembly groove 16 is opened on the mounting base 1, and the driving motor B61 is fixedly installed in the assembly groove 16, controlling the driving motors B61 in the two groups of longitudinal control components 6 to operate synchronously to drive the corresponding threaded rods A62 to operate synchronously. Since the spiral directions of the thread grooves corresponding to the two groups of longitudinal positioning seats 3 are arranged in opposite directions, the synchronously operating threaded rods A62 can simultaneously drive the two groups of longitudinal positioning seats 3 to approach or move away synchronously, thereby realizing effective positioning of the workpiece.

[0095] In order to ensure that the auxiliary control assembly 7 can drive the corresponding auxiliary positioning seat 4 to stably slide in the sliding groove 23 in the corresponding lateral positioning seat 2, and realize the position adjustment of the auxiliary positioning seat 4, the following technical solutions are provided:

[0096] The auxiliary control assembly 7 includes a drive motor C71 and a threaded rod B72. The threaded rod B72 is rotatably installed in the sliding slot 23 and is rotationally connected to the auxiliary positioning seat 4. The drive motor C71 is fixedly installed at one end of the sliding slot 23 and is poweredly connected to the threaded rod B72.

[0097] When the driving motor C71 drives the threaded rod B72 to run, it can drive the auxiliary positioning seat 4 to slide stably in the sliding groove 23 to control the retraction and extension posture of the auxiliary positioning seat 4 relative to the lateral positioning seat 2, and then use the auxiliary positioning seat 4 to effectively position the cylindrical and curved workpieces.

[0098] Example 4

[0099] See also Figure 1 , Figure 12-Figure 15 In order to ensure that the assembly slide 82 can slide stably in the assembly groove 81 and ensure that each group of assembly slides 82 can operate independently, the following technical solutions are provided:

[0100] The assembly groove 81 is fixedly connected with a guide rod 811 and a threaded rod C812 arranged along its own length direction, the assembly slide 82 is slidably connected with the guide rod 811, an assembly cavity 821 is opened in the assembly slide 82, the threaded rod C812 is arranged through the assembly cavity 821, the clamp assembly 8 also includes an adjustment assembly assembled in the assembly cavity 821, the adjustment assembly includes a threaded sleeve 861, a drive motor D862 and a matching combination of a worm wheel 863 and a worm 864, the threaded sleeve 861 is rotatably installed in the assembly cavity 821 and is kept in rotational connection with the threaded rod C812, the drive motor D862 is fixedly installed in the assembly cavity 821 and a worm 864 is fixedly connected to the output shaft of the drive motor D862, and the worm wheel 863 is fixedly connected to the periphery of the threaded sleeve 861.

[0101] The setting of the guide rod 811 can ensure that the assembly slide 82 can slide stably in the slide groove along the length direction of the assembly groove 81. When the operation of the corresponding assembly slide 82 is controlled by the adjustment component, the worm 864 is driven to rotate by controlling the drive motor D862, thereby driving the worm wheel 863 and the threaded sleeve 861 to operate stably. Since the combination of the worm wheel 863 and the worm 864 has the characteristics of deceleration and torque increase, the threaded sleeve 861 can be driven to operate stably. Since the threaded rod C812 is fixed in the assembly groove 81, the corresponding assembly slide 82 can be driven to slide stably along the assembly groove 81 during the rotation of the threaded sleeve 861 to adjust the position and posture of the corresponding assembly slide 82.

[0102] In the fixture assembly 8 assembled in the transverse positioning seat 2 and the longitudinal positioning seat 3, a plurality of assembly slides 82 are assembled in the assembly groove 81. The position and posture of each assembly slide 82 can be adjusted by adjusting the assembly, and the distance between two adjacent groups of assembly slides 82 can be adjusted at the same time.

[0103] In the fixture assembly 8 assembled in the auxiliary positioning seat 4, only one set of assembly slides 82 is assembled in the assembly groove 81. The position and posture of the assembly slides 82 can be adjusted by the adjustment assembly so that the positioning seat 83 on the assembly slide 82 can effectively abut against the cylindrical or curved workpiece.

[0104] In order to ensure that each group of retractable components in the same assembly slot 81 can synchronously control the retractable adjustment of the positioning card seat 83, the following technical solutions are provided:

[0105] A spline shaft A813 arranged along the length direction of the assembly groove 81 is rotatably installed in the assembly groove 81, an assembly box 814 is fixedly connected to one end of the assembly groove 81, a drive motor E815 is fixedly installed in the assembly box 814, the drive motor E815 and the spline shaft A813 maintain power connection, and a sliding guide groove 822 is opened in the assembly slide 82.

[0106] The retracting and unfolding assembly includes a driving bevel gear A841, a transmission bevel gear A842, a threaded rod D843, and a sliding bracket 844. The driving bevel gear A841 and the transmission bevel gear A842 are both rotatably installed in the assembly cavity 821 and remain in meshing. The driving bevel gear A841 is slidably plugged into the spline shaft A813. The threaded rod D843 is rotatably installed in the sliding guide groove 822 and is fixedly connected to the transmission bevel gear A842. The sliding bracket 844 is slidably installed in the sliding guide groove 822 and remains rotationally connected to the threaded rod D843.

[0107] The setting of the assembly box 814 can ensure that the drive motor E815 is stably installed therein, and the drive motor E815 can drive the spline shaft A813 to operate stably. When the assembly slide 82 is driven by the adjustment component to slide in the assembly groove 81, the drive bevel gear A841 in the assembled retractable component always maintains a sliding combination with the spline shaft A813 and transmits power. The power of the drive motor E815 is transmitted to the drive bevel gear A841 in the retractable component through the spline shaft A813, thereby driving the transmission bevel gear A842 and the threaded rod D843 to operate stably, thereby driving the sliding bracket 844 to slide stably in the sliding guide groove 822 in the assembly slide 82, so as to adjust the retractable posture of the positioning base 83.

[0108] In some of the implementations, in order to ensure that each group of lifting components in the same assembly slot 81 can synchronously control the lifting and lowering adjustment of each positioning card seat 83, the following technical solutions are provided:

[0109] A spline shaft B816 arranged along the length direction of the assembly groove 81 is rotatably installed in the assembly groove 81 , and a driving motor F817 that maintains power connection with the spline shaft B816 is fixedly installed in the assembly box 814 .

[0110] The lifting assembly includes a driving bevel gear B851, a transmission bevel gear B852, a spline shaft C853, a driving bevel gear C854, a transmission bevel gear C855, and a threaded rod E856. The driving bevel gear B851 and the transmission bevel gear B852 are both rotatably installed in the assembly cavity 821 and remain in meshing. The driving bevel gear B851 is slidably plugged into the spline shaft B816. The spline shaft B816 is rotatably installed in the sliding guide groove 822 and is fixedly connected to the transmission bevel gear B852. The driving bevel gear C854 and the transmission bevel gear C855 are both rotatably installed on the sliding bracket 844 and remain in meshing. The driving bevel gear C854 is slidably plugged into the spline shaft B816. The threaded rod E856 is rotatably installed in the sliding bracket 844 and arranged in a vertical direction. The transmission bevel gear C855 is fixedly connected to the threaded rod E856. The positioning base 83 is slidably installed on the sliding bracket 844 and remains rotationally connected to the threaded rod E856.

[0111] The driving motor F817 can drive the spline shaft B816 to operate stably. During the sliding operation of the assembly slide 82 along the assembly groove 81, the power of the spline shaft B816 can always be transmitted to the driving bevel gear B851, and then the spline shaft C853 is driven to operate stably through the transmission bevel gear B852. During the sliding operation of the sliding bracket 844 along the sliding guide groove 822, the power of the spline shaft C853 can always be transmitted to the driving bevel gear C854 on the sliding bracket 844, and then the threaded rod E856 is driven to operate stably through the transmission bevel gear C855, so as to drive the positioning base 83 to stably rise and fall in the vertical direction, thereby realizing the lifting and lowering posture adjustment of the positioning base 83.

[0112] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0113] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic adjustment and positioning milling machine workpiece fixture, characterized in that: It comprises a mounting base (1) and two groups of transverse positioning seats (2) and longitudinal positioning seats (3) which are mounted on the mounting base (1) and are kept vertically distributed, wherein the running directions of the transverse positioning seats (2) and longitudinal positioning seats (3) are kept vertical, and it also comprises an auxiliary positioning seat (4) which is slidably mounted on the transverse positioning seat (2), wherein the auxiliary positioning seat (4) is kept parallel to the running direction of the transverse positioning seat (2); It also includes: a transverse control component that is linked to the transverse positioning seat (2) and adjusts the spacing between the two groups of transverse positioning seats (2), a longitudinal control component (6) that is linked to the longitudinal positioning seat (3) and adjusts the spacing between the two groups of longitudinal positioning seats (3), and an auxiliary control component (7) that is assembled on the transverse positioning seat (2) and is linked to the corresponding auxiliary positioning seat (4); The device also comprises a fixture assembly (8), wherein the fixture assembly (8) comprises an assembly groove (81), an assembly slide seat (82), a positioning card seat (83), a retractable assembly, and a lifting assembly. The inner side surfaces of the transverse positioning seat (2), the longitudinal positioning seat (3), and the auxiliary positioning seat (4) are all fixedly mounted with a plurality of assembly grooves (81), and a plurality of assembly slide seats (82) are slidably mounted in the assembly grooves (81). The positioning card seat (83) is arranged above the assembly slide seat (82) and is linked to the lifting assembly. The lifting assembly is matched with the retractable assembly. The assembly groove (81) is fixedly connected with a guide rod (811) and a threaded rod C (812) arranged along its length direction; the assembly slide (82) is slidably plugged with the guide rod (811); an assembly cavity (821) is formed in the assembly slide (82); the threaded rod C (812) passes through the assembly cavity (821); the clamp assembly (8) further comprises an adjustment assembly assembled in the assembly cavity (821); the adjustment assembly comprises a threaded sleeve (86 1), a driving motor D (862) and a matching combination of a worm wheel (863) and a worm (864), the threaded sleeve (861) being rotatably mounted in the assembly cavity (821) and being rotationally connected to the threaded rod C (812), the driving motor D (862) being fixedly mounted in the assembly cavity (821) and the worm (864) being fixedly connected to the output shaft of the driving motor D (862), and the worm wheel (863) being fixedly connected to the periphery of the threaded sleeve (861); A spline shaft A (813) arranged along the length direction of the assembly groove (81) is rotatably mounted in the assembly groove (81); an assembly box (814) is fixedly connected to one end of the assembly groove (81); a drive motor E (815) is fixedly mounted in the assembly box (814); the drive motor E (815) is in power connection with the spline shaft A (813); and a sliding guide groove (822) is provided in the assembly slide seat (82); The retractable assembly comprises a driving bevel gear A (841), a transmission bevel gear A (842), a threaded rod D (843), and a sliding bracket (844); the driving bevel gear A (841) and the transmission bevel gear A (842) are both rotatably mounted in the assembly cavity (821) and remain in meshing engagement; the driving bevel gear A (841) and the spline shaft A (813) are slidably plugged; the threaded rod D (843) is rotatably mounted in the sliding guide groove (822) and is fixedly connected to the transmission bevel gear A (842); and the sliding bracket (844) is slidably mounted in the sliding guide groove (822) and remains in rotational connection with the threaded rod D (843); A spline shaft B (816) arranged along the length direction of the assembly groove (81) is rotatably mounted in the assembly groove (81), and a driving motor F (817) that maintains a power connection with the spline shaft B (816) is fixedly mounted in the assembly box (814); The lifting assembly comprises a driving bevel gear B (851), a transmission bevel gear B (852), a spline shaft C (853), a driving bevel gear C (854), a transmission bevel gear C (855), and a threaded rod E (856). The driving bevel gear B (851) and the transmission bevel gear B (852) are both rotatably mounted in the assembly cavity (821) and remain in meshing engagement. The driving bevel gear B (851) and the spline shaft B (816) are slidably plugged in. The spline shaft B (816) is rotatably mounted in the sliding guide groove (822) and is engaged with the transmission bevel gear B (8 52) are fixedly connected, the driving bevel gear C (854) and the transmission bevel gear C (855) are both rotatably mounted on the sliding bracket (844) and remain in meshing engagement, the driving bevel gear C (854) and the spline shaft B (816) are slidably plugged, the threaded rod E (856) is rotatably mounted in the sliding bracket (844) and arranged in a vertical direction, the transmission bevel gear C (855) and the threaded rod E (856) are fixedly connected, and the positioning bracket (83) is slidably mounted on the sliding bracket (844) and remains in rotational connection with the threaded rod E (856).

2. The automatic adjustment and positioning milling machine workpiece fixture according to claim 1, characterized in that: The mounting base (1) is fixedly connected with a plurality of travel guide rails (11) arranged in parallel and distributed on both sides of the mounting base (1); travel wheels (21) which are matched with the travel guide rails (11) are mounted on both sides of the bottom of the transverse positioning seat (2); and brake wheel brakes are mounted on the travel wheels (21); A clearance notch (22) is provided at the bottom of the transverse positioning seat (2), and the two groups of longitudinal positioning seats (3) are arranged in the clearance notch (22); The mounting base (1) is fixedly connected with two sets of travel guide grooves (12) arranged in parallel and distributed at both ends of the travel guide rail (11), the travel guide grooves (12) and the travel guide rail (11) are vertically distributed, and the bottoms of both ends of the longitudinal positioning seat (3) are fixedly connected with guide seats (31) slidably installed in the travel guide grooves (12).

3. The automatic adjustment and positioning milling machine workpiece fixture according to claim 2, characterized in that: The transverse positioning seat (2) is provided with a sliding through groove (23), and the auxiliary positioning seat (4) is slidably installed in the sliding through groove (23); The inner side surface of the auxiliary positioning seat (4) is provided with two positioning bevels (41), the included angles between the positioning bevels (41) and the transverse positioning seat (2) and the longitudinal positioning seat (3) are all set to 45 degrees, and the positioning bevels (41) are equipped with assembly grooves (81) of the clamp assembly (8).

4. The automatic adjustment and positioning milling machine workpiece fixture according to claim 2, characterized in that: The lateral control assembly comprises two groups of linkage assemblies (51) respectively arranged on both sides of the lateral positioning seat (2), the linkage assembly (51) comprising a fixed pulley A (511), a fixed pulley B (512), a steel cable A (513), and a steel cable B (514); the fixed pulley A (511) and the fixed pulley B (512) are respectively rotatably mounted on both ends of the mounting base (1) and arranged in the same length direction of the mounting base (1); the two ends of the steel cable A (513) are respectively fixedly connected to the two groups of lateral positioning seats (2) and arranged around the fixed pulley A (511); the two ends of the steel cable B (514) are respectively fixedly connected to the two groups of lateral positioning seats (2) and arranged around the fixed pulley B (512).

5. The automatic adjustment and positioning milling machine workpiece fixture according to claim 4, characterized in that: The lateral control assembly further comprises two groups of driving assemblies (52) respectively arranged on both sides of one group of lateral positioning seats (2), the driving assembly (52) comprising a winding drum (521), a driving motor A (522), a guide wheel (523), a steel cable C (524), and a fixed pulley C (525); the winding drum (521) is rotatably mounted on the outer side of the lateral positioning seat (2); the driving motor A (522) is in power connection with the winding drum (521); guide wheels (523) are arranged on both sides of the winding drum (521); the fixed pulley C (525) is rotatably mounted on the mounting base (1) and arranged on both sides of the winding drum (521); the steel cable C (524) is wound on the winding drum (521); both ends of the steel cable C (524) are fixedly connected to the lateral positioning seat (2) after passing through the guide wheel (523) and the fixed pulley on the corresponding side.

6. The automatic adjustment and positioning milling machine workpiece fixture according to claim 2, characterized in that: The two groups of the travel guide grooves (12) are both equipped with the longitudinal control assembly (6), and the longitudinal control assembly (6) comprises a driving motor B (61) and a threaded rod A (62). The threaded rod A (62) is rotatably mounted in the travel guide groove (12), and the threaded rod A (62) is provided with two sections of thread grooves arranged in opposite spiral directions. The guide seats (31) of the two groups of the longitudinal positioning seats (3) are respectively screwed to the two sections of the thread grooves, and the driving motor B (61) is fixedly mounted in the mounting base (1) and maintains a power connection with the threaded rod A (62).

7. The automatic adjustment and positioning milling machine workpiece fixture according to claim 3, characterized in that: The auxiliary control assembly (7) comprises a drive motor C (71) and a threaded rod B (72); the threaded rod B (72) is rotatably mounted in the sliding groove (23) and is rotationally connected to the auxiliary positioning seat (4); the drive motor C (71) is fixedly mounted at one end of the sliding groove (23) and is power-connected to the threaded rod B (72).

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